Optimization of AV intervals in single ventricle fusion pacing through electrogram morphology
AssigneeMedtronic, Inc.
InventorsBerry Van Gelder, M.S. Pilmeyer, John Burnes
Life of this patent
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Abstract
The present invention thus provides a simple and automatic method for determining an optimal AV interval and/or range of AV intervals for, in an exemplary embodiment, LV-only pacing. Such a method provides significant advantages for patients while reducing burdens related to post-implant follow-up by clinicians in that it greatly reduces the need for doing echocardiographic-based AV interval optimization procedures as well as providing a way to dynamically optimize AV intervals as the patient moves about their activities of daily living (ADL).
Claims20
A method of optimizing atrio-ventricular (AV) intervals for an single-ventricular fusion pacing therapy delivery, comprising:
- obtaining a sense-dominated signal indicative of intrinsic ventricular activity;
- obtaining a pacing-dominated signal indicative of paced ventricular activity, wherein the pacing-dominated signal is obtained during pacing therapy delivery utilizing a relatively short AV interval;
- extending the relatively short AV interval and recording one of a set of fusion/transition-candidate signals for each newly extended AV interval;
- identifying a fusion/transition signal from the set of fusion/transition-candidate signals;
- and
- programming an operating AV interval that corresponds to the newly extended AV interval that produced the fusion/transition signal.
An apparatus for optimizing atrio-ventricular (AV) intervals for an single-ventricular fusion pacing therapy delivery, comprising:
- means for obtaining a sense-dominated signal indicative of intrinsic ventricular activity;
- means for obtaining a pacing-dominated signal indicative of paced ventricular activity, wherein the pacing-dominated signal is obtained during pacing therapy delivery utilizing a relatively short AV interval;
- means for extending the relatively short AV interval and recording one of a set of fusion/transition-candidate signals for each newly extended AV interval;
- means for identifying a fusion/transition signal from the set of fusion/transition-candidate signals;
- and
- means for programming an operating AV interval that corresponds to the newly extended AV interval that produced the fusion/transition signal.
A computer readable medium for optimizing atrio-ventricular (AV) intervals for an single-ventricular fusion pacing therapy delivery, comprising:
- instructions for obtaining a sense-dominated signal indicative of intrinsic ventricular activity;
- instructions for obtaining a pacing-dominated signal indicative of paced ventricular activity, wherein the pacing-dominated signal is obtained during pacing therapy delivery utilizing a relatively short AV interval;
- instructions for extending the relatively short AV interval and recording one of a set of fusion/transition-candidate signals for each newly extended AV interval;
- instructions for identifying a fusion/transition signal from the set of fusion/transition-candidate signals;
- and
- instructions for programming an operating AV interval that corresponds to the newly extended AV interval that produced the fusion/transition signal.
Dependencies are inferred from the claim text.